COGS100 Weeks 1 and 2 revision quiz

Description

Basic principles of brain organization and neuroanatomy & Electrical Signals of Nerve Cells Voltage-Dependent Membrane Permeability & Channels and Transporters
Daniel Whiting
Quiz by Daniel Whiting, updated more than 1 year ago
Daniel Whiting
Created by Daniel Whiting almost 8 years ago
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Resource summary

Question 1

Question
The resting membrane potential of a neuron is typically about
Answer
  • -40 to -70mV
  • 40 to 70mV
  • 0mV
  • 90mV

Question 2

Question
An action potentials amplitude can vary greatly.
Answer
  • True
  • False

Question 3

Question
Passive current flow in a neuron is efficient enough for transmission.
Answer
  • True
  • False

Question 4

Question
The current for an action potential is generated by ___.
Answer
  • An efflux of Na+ ions
  • An influx of Na+ ions
  • An influx of K+ ions
  • An influx of Cl- ions

Question 5

Question
Ion influx is facilitated by ___.
Answer
  • Co-Transporters
  • Active transporters
  • Ion channels
  • Action potentials

Question 6

Question
Ion concentration gradients are established by ___.
Answer
  • Active transporters
  • Ion channels
  • Action potentials
  • Ions

Question 7

Question
The Nernst Equation predicts...
Answer
  • The action potential
  • The receptor potential
  • The threshold potential
  • The equilibrium potential

Question 8

Question
The undershoot phase of an action potential is due to
Answer
  • K+ Permeability
  • Na+ Permeability
  • Action Potential
  • Resting Membrane Potential

Question 9

Question
The method of controlling membrane potential while also measuring permeability changes.
Answer
  • Patch clamp method
  • Voltage clamp method
  • Permeability test
  • Extracellular recordings

Question 10

Question
Myelination improves...
Answer
  • Conduction velocity
  • Ion channel efficiency
  • The refectory period
  • None of these

Question 11

Question
Conduction using nodes of ranvier is called.
Answer
  • Conduction velocity
  • Hyper Conduction
  • Saltatory
  • Myelinated conduction

Question 12

Question
The two types of cells responsible for myelination are ___.
Answer
  • Oligodendrocytes and Schwann Cells
  • Neurons and Astrocytes
  • Microglial and Astrocytes
  • Lower Motor Neurons and Upper Motor Neurons

Question 13

Question
There are 3 times as many glial cells as there are neurons.
Answer
  • True
  • False

Question 14

Question
The method of measuring single ion channels.
Answer
  • Extracellular recording
  • Voltage clamp method
  • Patch clamp method
  • Ion testing

Question 15

Question
How many transmembrane units make up one Na+ or Ca+ channel
Answer
  • 24
  • 4
  • 7
  • 1

Question 16

Question
Hodgkin and Huxely used what method to determine what ions were flowing.
Answer
  • Patch Clamp method
  • Voltage Clamp method
  • Intracellular Recordings
  • All of these
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